50/60Hz Current Transformers and Current Sensors

Implement an Easy-to-Mount Current Transformer or Sensor

A current transformer measures electrical currents. It creates a reduced current proportional to the circuit’s current (1/N x I) and isolates the circuit from the measuring equipment. Typically, to measure the current, you need a break in the circuit to connect the ammeter in series. You can place a current transformer at any location on a board without affecting the connectivity of the circuit.

Unlike power transformers, current transformers don’t increase or decrease the voltage to power a piece of equipment. Instead, they simply measure the current running through a conductor and isolate the measurement from its source.

Current transformers can use a toroidal or EI core. They use single turn and multi-turn windings. Typical turn ratios are 1 to 500 or 1 to 1000, indicating that the current through the winding can be reduced by 500 or 1000. This makes it possible to measure high currents safely and efficiently.

Applications of a current transformer/current sensor include:

  • Metering
  • Coupling analog to digital circuits
  • Sensing overload current
  • Ground fault detection
  • Load drop or shutdown

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We have a quick turnaround for quotes and samples. We manufacture in house to respond even faster. To get a quote for a toroidal transformer, fill out our online form.

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